Extensions.Elements<'T> Method (IEnumerable<'T>, XName)

 

Returns a filtered collection of the child elements of every element and document in the source collection. Only elements that have a matching XName are included in the collection.

Namespace:   System.Xml.Linq
Assembly:  System.Xml.Linq (in System.Xml.Linq.dll)

static member Elements<'T when 'T : XContainer> : 
        source:IEnumerable<'T> *
        name:XName -> IEnumerable<XElement>

Parameters

source
Type: System.Collections.Generic.IEnumerable<'T>

An IEnumerable<'T> of XElement that contains the source collection.

name
Type: System.Xml.Linq.XName

The XName to match.

Return Value

Type: System.Collections.Generic.IEnumerable<XElement>

An IEnumerable<'T> of XElement of the child elements of every element and document in the source collection. Only elements that have a matching XName are included in the collection.

Type Parameters

T

The type of the objects in source, constrained to XContainer.

Visual Basic users can use the integrated elements axis to retrieve the child elements of every element in a collection.

This method uses deferred execution.

This extension method is useful when you want to retrieve all elements with a specified name at a particular depth. This is easy if the document is very regular, but if the document is irregular, it can be a bit more difficult. In the following example, we want to retrieve all aaa elements that are children of Item elements. A given Item element may or may not contain an aaa element. This is easily accomplished using this extension method, as follows:

No code example is currently available or this language may not be supported.

This example produces the following output:

<aaa>1</aaa>
<aaa>4</aaa>

The following is the same example, but in this case the XML is in a namespace. For more information, see Working with XML Namespaces.

No code example is currently available or this language may not be supported.

This example produces the following output:

<aaa xmlns="http://www.adventure-works.com">1</aaa>
<aaa xmlns="http://www.adventure-works.com">4</aaa>

Universal Windows Platform
Available since 8
.NET Framework
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
Return to top
Show: